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2 years ago

Help me pleaseeeeeeeeeeeeeee

Mathematics

1 answer:

Eduardwww [97]2 years ago

6 0

The formula to find the volume of a cube is:

volume= a^3

volume= a*a*a

(a stands for the side length)

The way you would write it is:

V=2.8^3

Then you solve.

You would get 21.952

But since you need to round to the tenth place it would be:

Hope this helps! :)

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Administrators at a local high school are organizing desks in the cafeteria for the junior students to use while taking a practi

ICE Princess25 [194]

Answer:

correct choice is B

Step-by-step explanation:

If d represents the number of desks in each row and the administrators want there to be 13 less rows than the number d of desks in each row, then the number of rows is d-13.

The total number of desks in all rows is

$d\cdot (d-13)=d^2-13d.$

Due to space limitations, there should be fewer than 264 students in the cafeteria. Therefore,

$d^2-13d$

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3 years ago

A right circular cylindrical tin of baking powder is 4 inches tall. The radius of the base is 1 inch. What is the surface area o

Ilia_Sergeevich [38]

Answer:

SA = 10 $\pi$ in²

Step-by-step explanation:

Formula to find the surface area of a cylinder is,

$2\pi r(r+h)$

Given that,

$r = 1 \\h=4$

Let,s solve now

$2\pi r(r+h)\\2\pi *1(1+4)\\2\pi (5)\\(10\pi) in^{2}$

Hope this helps you.

Let me know if you have any other questions :-)

5 0

3 years ago

There are 192 cubes. The length is 6 and the width is 4. What is the height?

Igoryamba

Answer:

Height = 8

Step-by-step explanation:

Volume = Length x width x height

192 = 6 x 4 x H

192 = 24 x H

192/24 = H

8 = H

Height = 8

8 0

3 years ago

An object with a mass of 3.0 g raises the level of water in a graduated cylinder from 25.1 mL to 33.1 mL. What is the density of

evablogger [386]

The displaced volume of the water, because of the submersion of the object, is equal to the volume of the object.

So to find the volume of the object we calculate the difference in volume of water:
33.1-25.1 = 8 ml

Since 1 mL of water has the volume of 1cm^3, then the volume of the object is 8 cm^3.

The density of the object is found by the formula:

density= mass/volume= (3 g) / (8 cm^3) = 3/8 (g/cm^3)= 0.375 g/cm^3

Answer: 0.375 g/cm^3

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4 years ago

Which is the only set of three measurements that could represent the lengths of a 3 side of a triangle?

Yuki888 [10]

Answer:

C or D

Step-by-step explanation:

4 0

3 years ago